Steinberg UR22 MKII Phones output volume

Hi everyone, I just bought Steinberg UR22 MKII audio interface, so far I’ve just recorded keyboards on line in, I like the sound of Yamaha pre’s.

I’ve installed the software (very minimal, maybe too much) and upgraded interface firmware to the latest version (v1.0.2 I think). The thing is that the headphones output volume is low for my taste, I use a Sennheiser Momentum On-ear headphones and I need to put the knob at 3/4 in order to get a decent volume. And I already turn the MIX knob 100% to the DAW.

Does anyone has the same problem?

Thanks in advance